For the kebabs, cut the chicken into chunks and slice the peppers into small squares. Thread the chicken and peppers onto kebab sticks (if you soak the sticks first, they won’t burn), alternating between chicken and different coloured peppers. Grill the kebabs on the braai or on a griddle pan on your stove until the chicken is cooked through. To make the satay sauce, fry the onion in some oil until soft. Add the garlic and chilli and fry for about a minute. Turn the heat down to low, add the peanut butter and stir to combine. Add the water, lemon juice, soy sauce, vinegar and sugar and continue stirring for three minutes or until the sauce is thick.